Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e17e5684a1645583ccce579cb1969efe8538652eda8a6763026b111a39442d70' 
  AND token = '+1rvB8toC8in52q5aZhg9lEMXoVgX9dO9UTAIZMV1IY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}